Fluid valve thermoresponsively controlled



Nov. 11 1924. 1,514,816

R. M. ANDERSON FLUID VALVE THERMORESPONSIVELY CONTROLLED Filed July 26, 1922 FEGJE AT'TORNEY.

I Be it. known that I, RAYMOND Patented Nov. 11, 1924.

UNITED STATES 514,816 PATENT OFFICE.

' RAYMOND M. ANDERSON, O'F DETROIT, MICHIGAN, ASSIGNOR TO GEORGE M. HOLLEY,

OF DETROIT, MICHIGAN.

FLUID VALVE *THERMORESPONSIVEI.Y CONTROLLED.

Application filed July 26, 1922. Serial No. 577,507.

To all wlwm it, may-concern. 1

ANDER- SON, a citizen of the United States, residing at 8650 Goethe Street, Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Fluid Valves Thermoresponsively Controlled, of which the following is a specification.

I have invented certain new and useful improvements in fluid valves thermoresponsively controlled.

This invention relates to means for controlling the flow of liquids, the said thermoresponsive means being especially adapted to regulate the fuel supply to an internal combustion engine so that the 'fuel supply may be regulated to correspond with the temperature changes of the air surrounding the carbureter which supplies the explosive mixture to the internal combustion engine.

Figure I shows a sectional elevation of the preferred construction. 7

Figure II shows a view of the thermoresponsive element itself;

In Figure I, 1 is the needle valve controlling the fluid outlet 2 by means of the taper point 12. The needle is threaded into a bushing 3 which is p'rovidedrwith two circumferential slots 4: and 5. This bushing slides in a assage 6 drilled in the piece 7.

The piece -7 is provided with a slot 8 into which fits the thermoresponsive element 9, and this thermoresponsive element also enages the bushing 3 inthe slot 4. The piece I is screwed into the body of the carbureter 10. A pin 11 is provided in the piece .7 and this pin 11 is inserted after the bushing 3 is assembled in the piece 7 the pin 11 passing by the slot 5.

Operation and adjustment -The piece 3 is assembled in the piece 7 and the pin 11 located in place. The thermoresponsive ele- .ment 9 is then snapped into place, the end which engages with the slot 4 of piece 3 being suitably formed as shown in Figure II. The needle is then'threaded-into the bushing 3, (usually two or three difierentneedles are tried having different tapers at the end 12).

'By providing the pin 11 and thus limiting the travel of the needle 1 when the temperature responsive element 9 is heated or cooled the following disadvantage is overcome. If

the opening 2 is made so small that the responsive element 9 will raise the needle 1 clear out of the opening 2 so that the diameter of 2 constitutes the maximum fluid opening, the adjustment of the needle taper 12, when it first enters the opening 2 is too fine and when the needle has entered the ratio of restriction increases too rapidly.

By using the slot 5 and the pin 11 and thus limiting the travel of the needle 1 in both directions it is possible to use a larger opening 2 and secure the control of the liquid fuel, by means of ataper which is practically proportional to the needle movement over that portion of the cone 12 which is operative to control the fuel opening 2. The needle 1 is provided with a slot 13 in its upper end so that the relationship of the needle 1 and the opening 2 can be regulated through the adjustment of the needle 1 in the bushing 3.

In order that a definite adjustment may 'b given to the needle 1 regardless of the position of the thermoresponsive element 9 the adjustment of the needle 1 is given as so many turns from the position at which the bushing 3 seats on the underside of the pin 11'. thereby giving a definite maximum opening to the needle when the temperature is low and the thermoresponsive element 9 is in its wide open position.

IVhat I claim is:

1. A valve seat, a moveable needle valve, 21 bushing in which said needle valve is adjust-able, a stop limiting the travel of the bushing in both directions, a U shaped thermoresponsive element, one leg engaging with the needle valve by means of the bushing, the other being locked in a stationary position with reference to said valve seat.

2. A valve seat. a moveable needle vah'e having a threaded portion on the stem thereof, a bushing threaded on said needle valve, a stationary passage in which said bushing slides, a stop limiting the movement of said bushing in both directions in said stationary passage, a U shaped thermoresponsive element, one leg of which engages with the said bushing, the other leg is stationary with reference to said valve seat.

In testimony whereof I afiix my signature.

RAYMOND M. ANDERSON. 

